MediaPlayerService.cpp revision 2beeb50b1bba9e92f6cacfeca37fe9fa9d36ead1 
1/*
2**
3** Copyright 2008, The Android Open Source Project
4**
5** Licensed under the Apache License, Version 2.0 (the "License");
6** you may not use this file except in compliance with the License.
7** You may obtain a copy of the License at
8**
9**     http://www.apache.org/licenses/LICENSE-2.0
10**
11** Unless required by applicable law or agreed to in writing, software
12** distributed under the License is distributed on an "AS IS" BASIS,
13** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14** See the License for the specific language governing permissions and
15** limitations under the License.
16*/
17
18// Proxy for media player implementations
19
20//#define LOG_NDEBUG 0
21#define LOG_TAG "MediaPlayerService"
22#include <utils/Log.h>
23
24#include <sys/types.h>
25#include <sys/stat.h>
26#include <dirent.h>
27#include <unistd.h>
28
29#include <string.h>
30
31#include <cutils/atomic.h>
32#include <cutils/properties.h> // for property_get
33
34#include <utils/misc.h>
35
36#include <android_runtime/ActivityManager.h>
37
38#include <binder/IPCThreadState.h>
39#include <binder/IServiceManager.h>
40#include <binder/MemoryHeapBase.h>
41#include <binder/MemoryBase.h>
42#include <utils/Errors.h>  // for status_t
43#include <utils/String8.h>
44#include <utils/SystemClock.h>
45#include <utils/Vector.h>
46#include <cutils/properties.h>
47
48#include <media/MediaPlayerInterface.h>
49#include <media/mediarecorder.h>
50#include <media/MediaMetadataRetrieverInterface.h>
51#include <media/Metadata.h>
52#include <media/AudioTrack.h>
53
54#include "MediaRecorderClient.h"
55#include "MediaPlayerService.h"
56#include "MetadataRetrieverClient.h"
57
58#include "MidiFile.h"
59#include <media/PVPlayer.h>
60#include "TestPlayerStub.h"
61#include "StagefrightPlayer.h"
62
63#include <OMX.h>
64
65/* desktop Linux needs a little help with gettid() */
66#if defined(HAVE_GETTID) && !defined(HAVE_ANDROID_OS)
67#define __KERNEL__
68# include <linux/unistd.h>
69#ifdef _syscall0
70_syscall0(pid_t,gettid)
71#else
72pid_t gettid() { return syscall(__NR_gettid);}
73#endif
74#undef __KERNEL__
75#endif
76
77namespace {
78using android::media::Metadata;
79using android::status_t;
80using android::OK;
81using android::BAD_VALUE;
82using android::NOT_ENOUGH_DATA;
83using android::Parcel;
84
85// Max number of entries in the filter.
86const int kMaxFilterSize = 64;  // I pulled that out of thin air.
87
88// FIXME: Move all the metadata related function in the Metadata.cpp
89
90
91// Unmarshall a filter from a Parcel.
92// Filter format in a parcel:
93//
94//  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
95// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
96// |                       number of entries (n)                   |
97// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
98// |                       metadata type 1                         |
99// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
100// |                       metadata type 2                         |
101// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
102//  ....
103// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
104// |                       metadata type n                         |
105// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
106//
107// @param p Parcel that should start with a filter.
108// @param[out] filter On exit contains the list of metadata type to be
109//                    filtered.
110// @param[out] status On exit contains the status code to be returned.
111// @return true if the parcel starts with a valid filter.
112bool unmarshallFilter(const Parcel& p,
113                      Metadata::Filter *filter,
114                      status_t *status)
115{
116    int32_t val;
117    if (p.readInt32(&val) != OK)
118    {
119        LOGE("Failed to read filter's length");
120        *status = NOT_ENOUGH_DATA;
121        return false;
122    }
123
124    if( val > kMaxFilterSize || val < 0)
125    {
126        LOGE("Invalid filter len %d", val);
127        *status = BAD_VALUE;
128        return false;
129    }
130
131    const size_t num = val;
132
133    filter->clear();
134    filter->setCapacity(num);
135
136    size_t size = num * sizeof(Metadata::Type);
137
138
139    if (p.dataAvail() < size)
140    {
141        LOGE("Filter too short expected %d but got %d", size, p.dataAvail());
142        *status = NOT_ENOUGH_DATA;
143        return false;
144    }
145
146    const Metadata::Type *data =
147            static_cast<const Metadata::Type*>(p.readInplace(size));
148
149    if (NULL == data)
150    {
151        LOGE("Filter had no data");
152        *status = BAD_VALUE;
153        return false;
154    }
155
156    // TODO: The stl impl of vector would be more efficient here
157    // because it degenerates into a memcpy on pod types. Try to
158    // replace later or use stl::set.
159    for (size_t i = 0; i < num; ++i)
160    {
161        filter->add(*data);
162        ++data;
163    }
164    *status = OK;
165    return true;
166}
167
168// @param filter Of metadata type.
169// @param val To be searched.
170// @return true if a match was found.
171bool findMetadata(const Metadata::Filter& filter, const int32_t val)
172{
173    // Deal with empty and ANY right away
174    if (filter.isEmpty()) return false;
175    if (filter[0] == Metadata::kAny) return true;
176
177    return filter.indexOf(val) >= 0;
178}
179
180}  // anonymous namespace
181
182
183namespace android {
184
185// TODO: Temp hack until we can register players
186typedef struct {
187    const char *extension;
188    const player_type playertype;
189} extmap;
190extmap FILE_EXTS [] =  {
191        {".mid", SONIVOX_PLAYER},
192        {".midi", SONIVOX_PLAYER},
193        {".smf", SONIVOX_PLAYER},
194        {".xmf", SONIVOX_PLAYER},
195        {".imy", SONIVOX_PLAYER},
196        {".rtttl", SONIVOX_PLAYER},
197        {".rtx", SONIVOX_PLAYER},
198        {".ota", SONIVOX_PLAYER},
199#ifndef NO_OPENCORE
200        {".wma", PV_PLAYER},
201        {".wmv", PV_PLAYER},
202        {".asf", PV_PLAYER},
203#endif
204};
205
206// TODO: Find real cause of Audio/Video delay in PV framework and remove this workaround
207/* static */ int MediaPlayerService::AudioOutput::mMinBufferCount = 4;
208/* static */ bool MediaPlayerService::AudioOutput::mIsOnEmulator = false;
209
210void MediaPlayerService::instantiate() {
211    defaultServiceManager()->addService(
212            String16("media.player"), new MediaPlayerService());
213}
214
215MediaPlayerService::MediaPlayerService()
216{
217    LOGV("MediaPlayerService created");
218    mNextConnId = 1;
219}
220
221MediaPlayerService::~MediaPlayerService()
222{
223    LOGV("MediaPlayerService destroyed");
224}
225
226sp<IMediaRecorder> MediaPlayerService::createMediaRecorder(pid_t pid)
227{
228    sp<MediaRecorderClient> recorder = new MediaRecorderClient(this, pid);
229    wp<MediaRecorderClient> w = recorder;
230    Mutex::Autolock lock(mLock);
231    mMediaRecorderClients.add(w);
232    LOGV("Create new media recorder client from pid %d", pid);
233    return recorder;
234}
235
236void MediaPlayerService::removeMediaRecorderClient(wp<MediaRecorderClient> client)
237{
238    Mutex::Autolock lock(mLock);
239    mMediaRecorderClients.remove(client);
240    LOGV("Delete media recorder client");
241}
242
243sp<IMediaMetadataRetriever> MediaPlayerService::createMetadataRetriever(pid_t pid)
244{
245    sp<MetadataRetrieverClient> retriever = new MetadataRetrieverClient(pid);
246    LOGV("Create new media retriever from pid %d", pid);
247    return retriever;
248}
249
250sp<IMediaPlayer> MediaPlayerService::create(
251        pid_t pid, const sp<IMediaPlayerClient>& client, const char* url,
252        const KeyedVector<String8, String8> *headers, int audioSessionId)
253{
254    int32_t connId = android_atomic_inc(&mNextConnId);
255    sp<Client> c = new Client(this, pid, connId, client, audioSessionId);
256    LOGV("Create new client(%d) from pid %d, url=%s, connId=%d, audioSessionId=%d",
257            connId, pid, url, connId, audioSessionId);
258    if (NO_ERROR != c->setDataSource(url, headers))
259    {
260        c.clear();
261        return c;
262    }
263    wp<Client> w = c;
264    Mutex::Autolock lock(mLock);
265    mClients.add(w);
266    return c;
267}
268
269sp<IMediaPlayer> MediaPlayerService::create(pid_t pid, const sp<IMediaPlayerClient>& client,
270        int fd, int64_t offset, int64_t length, int audioSessionId)
271{
272    int32_t connId = android_atomic_inc(&mNextConnId);
273    sp<Client> c = new Client(this, pid, connId, client, audioSessionId);
274    LOGV("Create new client(%d) from pid %d, fd=%d, offset=%lld, length=%lld, audioSessionId=%d",
275            connId, pid, fd, offset, length, audioSessionId);
276    if (NO_ERROR != c->setDataSource(fd, offset, length)) {
277        c.clear();
278    } else {
279        wp<Client> w = c;
280        Mutex::Autolock lock(mLock);
281        mClients.add(w);
282    }
283    ::close(fd);
284    return c;
285}
286
287sp<IOMX> MediaPlayerService::getOMX() {
288    Mutex::Autolock autoLock(mLock);
289
290    if (mOMX.get() == NULL) {
291        mOMX = new OMX;
292    }
293
294    return mOMX;
295}
296
297status_t MediaPlayerService::AudioCache::dump(int fd, const Vector<String16>& args) const
298{
299    const size_t SIZE = 256;
300    char buffer[SIZE];
301    String8 result;
302
303    result.append(" AudioCache\n");
304    if (mHeap != 0) {
305        snprintf(buffer, 255, "  heap base(%p), size(%d), flags(%d), device(%s)\n",
306                mHeap->getBase(), mHeap->getSize(), mHeap->getFlags(), mHeap->getDevice());
307        result.append(buffer);
308    }
309    snprintf(buffer, 255, "  msec per frame(%f), channel count(%d), format(%d), frame count(%ld)\n",
310            mMsecsPerFrame, mChannelCount, mFormat, mFrameCount);
311    result.append(buffer);
312    snprintf(buffer, 255, "  sample rate(%d), size(%d), error(%d), command complete(%s)\n",
313            mSampleRate, mSize, mError, mCommandComplete?"true":"false");
314    result.append(buffer);
315    ::write(fd, result.string(), result.size());
316    return NO_ERROR;
317}
318
319status_t MediaPlayerService::AudioOutput::dump(int fd, const Vector<String16>& args) const
320{
321    const size_t SIZE = 256;
322    char buffer[SIZE];
323    String8 result;
324
325    result.append(" AudioOutput\n");
326    snprintf(buffer, 255, "  stream type(%d), left - right volume(%f, %f)\n",
327            mStreamType, mLeftVolume, mRightVolume);
328    result.append(buffer);
329    snprintf(buffer, 255, "  msec per frame(%f), latency (%d)\n",
330            mMsecsPerFrame, mLatency);
331    result.append(buffer);
332    snprintf(buffer, 255, "  aux effect id(%d), send level (%f)\n",
333            mAuxEffectId, mSendLevel);
334    result.append(buffer);
335
336    ::write(fd, result.string(), result.size());
337    if (mTrack != 0) {
338        mTrack->dump(fd, args);
339    }
340    return NO_ERROR;
341}
342
343status_t MediaPlayerService::Client::dump(int fd, const Vector<String16>& args) const
344{
345    const size_t SIZE = 256;
346    char buffer[SIZE];
347    String8 result;
348    result.append(" Client\n");
349    snprintf(buffer, 255, "  pid(%d), connId(%d), status(%d), looping(%s)\n",
350            mPid, mConnId, mStatus, mLoop?"true": "false");
351    result.append(buffer);
352    write(fd, result.string(), result.size());
353    if (mAudioOutput != 0) {
354        mAudioOutput->dump(fd, args);
355    }
356    write(fd, "\n", 1);
357    return NO_ERROR;
358}
359
360static int myTid() {
361#ifdef HAVE_GETTID
362    return gettid();
363#else
364    return getpid();
365#endif
366}
367
368#if defined(__arm__)
369extern "C" void get_malloc_leak_info(uint8_t** info, size_t* overallSize,
370        size_t* infoSize, size_t* totalMemory, size_t* backtraceSize);
371extern "C" void free_malloc_leak_info(uint8_t* info);
372
373// Use the String-class below instead of String8 to allocate all memory
374// beforehand and not reenter the heap while we are examining it...
375struct MyString8 {
376    static const size_t MAX_SIZE = 256 * 1024;
377
378    MyString8()
379        : mPtr((char *)malloc(MAX_SIZE)) {
380        *mPtr = '\0';
381    }
382
383    ~MyString8() {
384        free(mPtr);
385    }
386
387    void append(const char *s) {
388        strcat(mPtr, s);
389    }
390
391    const char *string() const {
392        return mPtr;
393    }
394
395    size_t size() const {
396        return strlen(mPtr);
397    }
398
399private:
400    char *mPtr;
401
402    MyString8(const MyString8 &);
403    MyString8 &operator=(const MyString8 &);
404};
405
406void memStatus(int fd, const Vector<String16>& args)
407{
408    const size_t SIZE = 256;
409    char buffer[SIZE];
410    MyString8 result;
411
412    typedef struct {
413        size_t size;
414        size_t dups;
415        intptr_t * backtrace;
416    } AllocEntry;
417
418    uint8_t *info = NULL;
419    size_t overallSize = 0;
420    size_t infoSize = 0;
421    size_t totalMemory = 0;
422    size_t backtraceSize = 0;
423
424    get_malloc_leak_info(&info, &overallSize, &infoSize, &totalMemory, &backtraceSize);
425    if (info) {
426        uint8_t *ptr = info;
427        size_t count = overallSize / infoSize;
428
429        snprintf(buffer, SIZE, " Allocation count %i\n", count);
430        result.append(buffer);
431        snprintf(buffer, SIZE, " Total memory %i\n", totalMemory);
432        result.append(buffer);
433
434        AllocEntry * entries = new AllocEntry[count];
435
436        for (size_t i = 0; i < count; i++) {
437            // Each entry should be size_t, size_t, intptr_t[backtraceSize]
438            AllocEntry *e = &entries[i];
439
440            e->size = *reinterpret_cast<size_t *>(ptr);
441            ptr += sizeof(size_t);
442
443            e->dups = *reinterpret_cast<size_t *>(ptr);
444            ptr += sizeof(size_t);
445
446            e->backtrace = reinterpret_cast<intptr_t *>(ptr);
447            ptr += sizeof(intptr_t) * backtraceSize;
448        }
449
450        // Now we need to sort the entries.  They come sorted by size but
451        // not by stack trace which causes problems using diff.
452        bool moved;
453        do {
454            moved = false;
455            for (size_t i = 0; i < (count - 1); i++) {
456                AllocEntry *e1 = &entries[i];
457                AllocEntry *e2 = &entries[i+1];
458
459                bool swap = e1->size < e2->size;
460                if (e1->size == e2->size) {
461                    for(size_t j = 0; j < backtraceSize; j++) {
462                        if (e1->backtrace[j] == e2->backtrace[j]) {
463                            continue;
464                        }
465                        swap = e1->backtrace[j] < e2->backtrace[j];
466                        break;
467                    }
468                }
469                if (swap) {
470                    AllocEntry t = entries[i];
471                    entries[i] = entries[i+1];
472                    entries[i+1] = t;
473                    moved = true;
474                }
475            }
476        } while (moved);
477
478        for (size_t i = 0; i < count; i++) {
479            AllocEntry *e = &entries[i];
480
481            snprintf(buffer, SIZE, "size %8i, dup %4i, ", e->size, e->dups);
482            result.append(buffer);
483            for (size_t ct = 0; (ct < backtraceSize) && e->backtrace[ct]; ct++) {
484                if (ct) {
485                    result.append(", ");
486                }
487                snprintf(buffer, SIZE, "0x%08x", e->backtrace[ct]);
488                result.append(buffer);
489            }
490            result.append("\n");
491        }
492
493        delete[] entries;
494        free_malloc_leak_info(info);
495    }
496
497    write(fd, result.string(), result.size());
498}
499#endif
500
501status_t MediaPlayerService::dump(int fd, const Vector<String16>& args)
502{
503    const size_t SIZE = 256;
504    char buffer[SIZE];
505    String8 result;
506    if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
507        snprintf(buffer, SIZE, "Permission Denial: "
508                "can't dump MediaPlayerService from pid=%d, uid=%d\n",
509                IPCThreadState::self()->getCallingPid(),
510                IPCThreadState::self()->getCallingUid());
511        result.append(buffer);
512    } else {
513        Mutex::Autolock lock(mLock);
514        for (int i = 0, n = mClients.size(); i < n; ++i) {
515            sp<Client> c = mClients[i].promote();
516            if (c != 0) c->dump(fd, args);
517        }
518        if (mMediaRecorderClients.size() == 0) {
519                result.append(" No media recorder client\n\n");
520        } else {
521            for (int i = 0, n = mMediaRecorderClients.size(); i < n; ++i) {
522                sp<MediaRecorderClient> c = mMediaRecorderClients[i].promote();
523                snprintf(buffer, 255, " MediaRecorderClient pid(%d)\n", c->mPid);
524                result.append(buffer);
525                write(fd, result.string(), result.size());
526                result = "\n";
527                c->dump(fd, args);
528            }
529        }
530
531        result.append(" Files opened and/or mapped:\n");
532        snprintf(buffer, SIZE, "/proc/%d/maps", myTid());
533        FILE *f = fopen(buffer, "r");
534        if (f) {
535            while (!feof(f)) {
536                fgets(buffer, SIZE, f);
537                if (strstr(buffer, " /sdcard/") ||
538                    strstr(buffer, " /system/sounds/") ||
539                    strstr(buffer, " /system/media/")) {
540                    result.append("  ");
541                    result.append(buffer);
542                }
543            }
544            fclose(f);
545        } else {
546            result.append("couldn't open ");
547            result.append(buffer);
548            result.append("\n");
549        }
550
551        snprintf(buffer, SIZE, "/proc/%d/fd", myTid());
552        DIR *d = opendir(buffer);
553        if (d) {
554            struct dirent *ent;
555            while((ent = readdir(d)) != NULL) {
556                if (strcmp(ent->d_name,".") && strcmp(ent->d_name,"..")) {
557                    snprintf(buffer, SIZE, "/proc/%d/fd/%s", myTid(), ent->d_name);
558                    struct stat s;
559                    if (lstat(buffer, &s) == 0) {
560                        if ((s.st_mode & S_IFMT) == S_IFLNK) {
561                            char linkto[256];
562                            int len = readlink(buffer, linkto, sizeof(linkto));
563                            if(len > 0) {
564                                if(len > 255) {
565                                    linkto[252] = '.';
566                                    linkto[253] = '.';
567                                    linkto[254] = '.';
568                                    linkto[255] = 0;
569                                } else {
570                                    linkto[len] = 0;
571                                }
572                                if (strstr(linkto, "/sdcard/") == linkto ||
573                                    strstr(linkto, "/system/sounds/") == linkto ||
574                                    strstr(linkto, "/system/media/") == linkto) {
575                                    result.append("  ");
576                                    result.append(buffer);
577                                    result.append(" -> ");
578                                    result.append(linkto);
579                                    result.append("\n");
580                                }
581                            }
582                        } else {
583                            result.append("  unexpected type for ");
584                            result.append(buffer);
585                            result.append("\n");
586                        }
587                    }
588                }
589            }
590            closedir(d);
591        } else {
592            result.append("couldn't open ");
593            result.append(buffer);
594            result.append("\n");
595        }
596
597#if defined(__arm__)
598        bool dumpMem = false;
599        for (size_t i = 0; i < args.size(); i++) {
600            if (args[i] == String16("-m")) {
601                dumpMem = true;
602            }
603        }
604        if (dumpMem) {
605            memStatus(fd, args);
606        }
607#endif
608    }
609    write(fd, result.string(), result.size());
610    return NO_ERROR;
611}
612
613void MediaPlayerService::removeClient(wp<Client> client)
614{
615    Mutex::Autolock lock(mLock);
616    mClients.remove(client);
617}
618
619MediaPlayerService::Client::Client(const sp<MediaPlayerService>& service, pid_t pid,
620        int32_t connId, const sp<IMediaPlayerClient>& client, int audioSessionId)
621{
622    LOGV("Client(%d) constructor", connId);
623    mPid = pid;
624    mConnId = connId;
625    mService = service;
626    mClient = client;
627    mLoop = false;
628    mStatus = NO_INIT;
629    mAudioSessionId = audioSessionId;
630
631#if CALLBACK_ANTAGONIZER
632    LOGD("create Antagonizer");
633    mAntagonizer = new Antagonizer(notify, this);
634#endif
635}
636
637MediaPlayerService::Client::~Client()
638{
639    LOGV("Client(%d) destructor pid = %d", mConnId, mPid);
640    mAudioOutput.clear();
641    wp<Client> client(this);
642    disconnect();
643    mService->removeClient(client);
644}
645
646void MediaPlayerService::Client::disconnect()
647{
648    LOGV("disconnect(%d) from pid %d", mConnId, mPid);
649    // grab local reference and clear main reference to prevent future
650    // access to object
651    sp<MediaPlayerBase> p;
652    {
653        Mutex::Autolock l(mLock);
654        p = mPlayer;
655    }
656    mClient.clear();
657
658    mPlayer.clear();
659
660    // clear the notification to prevent callbacks to dead client
661    // and reset the player. We assume the player will serialize
662    // access to itself if necessary.
663    if (p != 0) {
664        p->setNotifyCallback(0, 0);
665#if CALLBACK_ANTAGONIZER
666        LOGD("kill Antagonizer");
667        mAntagonizer->kill();
668#endif
669        p->reset();
670    }
671
672    IPCThreadState::self()->flushCommands();
673}
674
675static player_type getDefaultPlayerType() {
676    return STAGEFRIGHT_PLAYER;
677}
678
679player_type getPlayerType(int fd, int64_t offset, int64_t length)
680{
681    char buf[20];
682    lseek(fd, offset, SEEK_SET);
683    read(fd, buf, sizeof(buf));
684    lseek(fd, offset, SEEK_SET);
685
686    long ident = *((long*)buf);
687
688    // Ogg vorbis?
689    if (ident == 0x5367674f) // 'OggS'
690        return STAGEFRIGHT_PLAYER;
691
692#ifndef NO_OPENCORE
693    if (ident == 0x75b22630) {
694        // The magic number for .asf files, i.e. wmv and wma content.
695        // These are not currently supported through stagefright.
696        return PV_PLAYER;
697    }
698#endif
699
700    // Some kind of MIDI?
701    EAS_DATA_HANDLE easdata;
702    if (EAS_Init(&easdata) == EAS_SUCCESS) {
703        EAS_FILE locator;
704        locator.path = NULL;
705        locator.fd = fd;
706        locator.offset = offset;
707        locator.length = length;
708        EAS_HANDLE  eashandle;
709        if (EAS_OpenFile(easdata, &locator, &eashandle) == EAS_SUCCESS) {
710            EAS_CloseFile(easdata, eashandle);
711            EAS_Shutdown(easdata);
712            return SONIVOX_PLAYER;
713        }
714        EAS_Shutdown(easdata);
715    }
716
717    return getDefaultPlayerType();
718}
719
720player_type getPlayerType(const char* url)
721{
722    if (TestPlayerStub::canBeUsed(url)) {
723        return TEST_PLAYER;
724    }
725
726    // use MidiFile for MIDI extensions
727    int lenURL = strlen(url);
728    for (int i = 0; i < NELEM(FILE_EXTS); ++i) {
729        int len = strlen(FILE_EXTS[i].extension);
730        int start = lenURL - len;
731        if (start > 0) {
732            if (!strncasecmp(url + start, FILE_EXTS[i].extension, len)) {
733                return FILE_EXTS[i].playertype;
734            }
735        }
736    }
737
738    if (!strncasecmp(url, "rtsp://", 7)) {
739        char value[PROPERTY_VALUE_MAX];
740        if (!property_get("media.stagefright.enable-rtsp", value, NULL)
741            || (strcmp(value, "1") && strcasecmp(value, "true"))) {
742            // For now, we're going to use PV for rtsp-based playback
743            // by default until we can clear up a few more issues.
744            return PV_PLAYER;
745        }
746    }
747
748    return getDefaultPlayerType();
749}
750
751static sp<MediaPlayerBase> createPlayer(player_type playerType, void* cookie,
752        notify_callback_f notifyFunc)
753{
754    sp<MediaPlayerBase> p;
755    switch (playerType) {
756#ifndef NO_OPENCORE
757        case PV_PLAYER:
758            LOGV(" create PVPlayer");
759            p = new PVPlayer();
760            break;
761#endif
762        case SONIVOX_PLAYER:
763            LOGV(" create MidiFile");
764            p = new MidiFile();
765            break;
766        case STAGEFRIGHT_PLAYER:
767            LOGV(" create StagefrightPlayer");
768            p = new StagefrightPlayer;
769            break;
770        case TEST_PLAYER:
771            LOGV("Create Test Player stub");
772            p = new TestPlayerStub();
773            break;
774    }
775    if (p != NULL) {
776        if (p->initCheck() == NO_ERROR) {
777            p->setNotifyCallback(cookie, notifyFunc);
778        } else {
779            p.clear();
780        }
781    }
782    if (p == NULL) {
783        LOGE("Failed to create player object");
784    }
785    return p;
786}
787
788sp<MediaPlayerBase> MediaPlayerService::Client::createPlayer(player_type playerType)
789{
790    // determine if we have the right player type
791    sp<MediaPlayerBase> p = mPlayer;
792    if ((p != NULL) && (p->playerType() != playerType)) {
793        LOGV("delete player");
794        p.clear();
795    }
796    if (p == NULL) {
797        p = android::createPlayer(playerType, this, notify);
798    }
799    return p;
800}
801
802status_t MediaPlayerService::Client::setDataSource(
803        const char *url, const KeyedVector<String8, String8> *headers)
804{
805    LOGV("setDataSource(%s)", url);
806    if (url == NULL)
807        return UNKNOWN_ERROR;
808
809    if (strncmp(url, "content://", 10) == 0) {
810        // get a filedescriptor for the content Uri and
811        // pass it to the setDataSource(fd) method
812
813        String16 url16(url);
814        int fd = android::openContentProviderFile(url16);
815        if (fd < 0)
816        {
817            LOGE("Couldn't open fd for %s", url);
818            return UNKNOWN_ERROR;
819        }
820        setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus
821        close(fd);
822        return mStatus;
823    } else {
824        player_type playerType = getPlayerType(url);
825        LOGV("player type = %d", playerType);
826
827        // create the right type of player
828        sp<MediaPlayerBase> p = createPlayer(playerType);
829        if (p == NULL) return NO_INIT;
830
831        if (!p->hardwareOutput()) {
832            mAudioOutput = new AudioOutput(mAudioSessionId);
833            static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
834        }
835
836        // now set data source
837        LOGV(" setDataSource");
838        mStatus = p->setDataSource(url, headers);
839        if (mStatus == NO_ERROR) {
840            mPlayer = p;
841        } else {
842            LOGE("  error: %d", mStatus);
843        }
844        return mStatus;
845    }
846}
847
848status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length)
849{
850    LOGV("setDataSource fd=%d, offset=%lld, length=%lld", fd, offset, length);
851    struct stat sb;
852    int ret = fstat(fd, &sb);
853    if (ret != 0) {
854        LOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
855        return UNKNOWN_ERROR;
856    }
857
858    LOGV("st_dev  = %llu", sb.st_dev);
859    LOGV("st_mode = %u", sb.st_mode);
860    LOGV("st_uid  = %lu", sb.st_uid);
861    LOGV("st_gid  = %lu", sb.st_gid);
862    LOGV("st_size = %llu", sb.st_size);
863
864    if (offset >= sb.st_size) {
865        LOGE("offset error");
866        ::close(fd);
867        return UNKNOWN_ERROR;
868    }
869    if (offset + length > sb.st_size) {
870        length = sb.st_size - offset;
871        LOGV("calculated length = %lld", length);
872    }
873
874    player_type playerType = getPlayerType(fd, offset, length);
875    LOGV("player type = %d", playerType);
876
877    // create the right type of player
878    sp<MediaPlayerBase> p = createPlayer(playerType);
879    if (p == NULL) return NO_INIT;
880
881    if (!p->hardwareOutput()) {
882        mAudioOutput = new AudioOutput(mAudioSessionId);
883        static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
884    }
885
886    // now set data source
887    mStatus = p->setDataSource(fd, offset, length);
888    if (mStatus == NO_ERROR) mPlayer = p;
889    return mStatus;
890}
891
892status_t MediaPlayerService::Client::setVideoSurface(const sp<ISurface>& surface)
893{
894    LOGV("[%d] setVideoSurface(%p)", mConnId, surface.get());
895    sp<MediaPlayerBase> p = getPlayer();
896    if (p == 0) return UNKNOWN_ERROR;
897    return p->setVideoSurface(surface);
898}
899
900status_t MediaPlayerService::Client::invoke(const Parcel& request,
901                                            Parcel *reply)
902{
903    sp<MediaPlayerBase> p = getPlayer();
904    if (p == NULL) return UNKNOWN_ERROR;
905    return p->invoke(request, reply);
906}
907
908// This call doesn't need to access the native player.
909status_t MediaPlayerService::Client::setMetadataFilter(const Parcel& filter)
910{
911    status_t status;
912    media::Metadata::Filter allow, drop;
913
914    if (unmarshallFilter(filter, &allow, &status) &&
915        unmarshallFilter(filter, &drop, &status)) {
916        Mutex::Autolock lock(mLock);
917
918        mMetadataAllow = allow;
919        mMetadataDrop = drop;
920    }
921    return status;
922}
923
924status_t MediaPlayerService::Client::getMetadata(
925        bool update_only, bool apply_filter, Parcel *reply)
926{
927    sp<MediaPlayerBase> player = getPlayer();
928    if (player == 0) return UNKNOWN_ERROR;
929
930    status_t status;
931    // Placeholder for the return code, updated by the caller.
932    reply->writeInt32(-1);
933
934    media::Metadata::Filter ids;
935
936    // We don't block notifications while we fetch the data. We clear
937    // mMetadataUpdated first so we don't lose notifications happening
938    // during the rest of this call.
939    {
940        Mutex::Autolock lock(mLock);
941        if (update_only) {
942            ids = mMetadataUpdated;
943        }
944        mMetadataUpdated.clear();
945    }
946
947    media::Metadata metadata(reply);
948
949    metadata.appendHeader();
950    status = player->getMetadata(ids, reply);
951
952    if (status != OK) {
953        metadata.resetParcel();
954        LOGE("getMetadata failed %d", status);
955        return status;
956    }
957
958    // FIXME: Implement filtering on the result. Not critical since
959    // filtering takes place on the update notifications already. This
960    // would be when all the metadata are fetch and a filter is set.
961
962    // Everything is fine, update the metadata length.
963    metadata.updateLength();
964    return OK;
965}
966
967status_t MediaPlayerService::Client::suspend() {
968    sp<MediaPlayerBase> p = getPlayer();
969    if (p == 0) return UNKNOWN_ERROR;
970
971    return p->suspend();
972}
973
974status_t MediaPlayerService::Client::resume() {
975    sp<MediaPlayerBase> p = getPlayer();
976    if (p == 0) return UNKNOWN_ERROR;
977
978    return p->resume();
979}
980
981status_t MediaPlayerService::Client::prepareAsync()
982{
983    LOGV("[%d] prepareAsync", mConnId);
984    sp<MediaPlayerBase> p = getPlayer();
985    if (p == 0) return UNKNOWN_ERROR;
986    status_t ret = p->prepareAsync();
987#if CALLBACK_ANTAGONIZER
988    LOGD("start Antagonizer");
989    if (ret == NO_ERROR) mAntagonizer->start();
990#endif
991    return ret;
992}
993
994status_t MediaPlayerService::Client::start()
995{
996    LOGV("[%d] start", mConnId);
997    sp<MediaPlayerBase> p = getPlayer();
998    if (p == 0) return UNKNOWN_ERROR;
999    p->setLooping(mLoop);
1000    return p->start();
1001}
1002
1003status_t MediaPlayerService::Client::stop()
1004{
1005    LOGV("[%d] stop", mConnId);
1006    sp<MediaPlayerBase> p = getPlayer();
1007    if (p == 0) return UNKNOWN_ERROR;
1008    return p->stop();
1009}
1010
1011status_t MediaPlayerService::Client::pause()
1012{
1013    LOGV("[%d] pause", mConnId);
1014    sp<MediaPlayerBase> p = getPlayer();
1015    if (p == 0) return UNKNOWN_ERROR;
1016    return p->pause();
1017}
1018
1019status_t MediaPlayerService::Client::isPlaying(bool* state)
1020{
1021    *state = false;
1022    sp<MediaPlayerBase> p = getPlayer();
1023    if (p == 0) return UNKNOWN_ERROR;
1024    *state = p->isPlaying();
1025    LOGV("[%d] isPlaying: %d", mConnId, *state);
1026    return NO_ERROR;
1027}
1028
1029status_t MediaPlayerService::Client::getCurrentPosition(int *msec)
1030{
1031    LOGV("getCurrentPosition");
1032    sp<MediaPlayerBase> p = getPlayer();
1033    if (p == 0) return UNKNOWN_ERROR;
1034    status_t ret = p->getCurrentPosition(msec);
1035    if (ret == NO_ERROR) {
1036        LOGV("[%d] getCurrentPosition = %d", mConnId, *msec);
1037    } else {
1038        LOGE("getCurrentPosition returned %d", ret);
1039    }
1040    return ret;
1041}
1042
1043status_t MediaPlayerService::Client::getDuration(int *msec)
1044{
1045    LOGV("getDuration");
1046    sp<MediaPlayerBase> p = getPlayer();
1047    if (p == 0) return UNKNOWN_ERROR;
1048    status_t ret = p->getDuration(msec);
1049    if (ret == NO_ERROR) {
1050        LOGV("[%d] getDuration = %d", mConnId, *msec);
1051    } else {
1052        LOGE("getDuration returned %d", ret);
1053    }
1054    return ret;
1055}
1056
1057status_t MediaPlayerService::Client::seekTo(int msec)
1058{
1059    LOGV("[%d] seekTo(%d)", mConnId, msec);
1060    sp<MediaPlayerBase> p = getPlayer();
1061    if (p == 0) return UNKNOWN_ERROR;
1062    return p->seekTo(msec);
1063}
1064
1065status_t MediaPlayerService::Client::reset()
1066{
1067    LOGV("[%d] reset", mConnId);
1068    sp<MediaPlayerBase> p = getPlayer();
1069    if (p == 0) return UNKNOWN_ERROR;
1070    return p->reset();
1071}
1072
1073status_t MediaPlayerService::Client::setAudioStreamType(int type)
1074{
1075    LOGV("[%d] setAudioStreamType(%d)", mConnId, type);
1076    // TODO: for hardware output, call player instead
1077    Mutex::Autolock l(mLock);
1078    if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type);
1079    return NO_ERROR;
1080}
1081
1082status_t MediaPlayerService::Client::setLooping(int loop)
1083{
1084    LOGV("[%d] setLooping(%d)", mConnId, loop);
1085    mLoop = loop;
1086    sp<MediaPlayerBase> p = getPlayer();
1087    if (p != 0) return p->setLooping(loop);
1088    return NO_ERROR;
1089}
1090
1091status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume)
1092{
1093    LOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume);
1094    // TODO: for hardware output, call player instead
1095    Mutex::Autolock l(mLock);
1096    if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume);
1097    return NO_ERROR;
1098}
1099
1100status_t MediaPlayerService::Client::setAuxEffectSendLevel(float level)
1101{
1102    LOGV("[%d] setAuxEffectSendLevel(%f)", mConnId, level);
1103    Mutex::Autolock l(mLock);
1104    if (mAudioOutput != 0) return mAudioOutput->setAuxEffectSendLevel(level);
1105    return NO_ERROR;
1106}
1107
1108status_t MediaPlayerService::Client::attachAuxEffect(int effectId)
1109{
1110    LOGV("[%d] attachAuxEffect(%d)", mConnId, effectId);
1111    Mutex::Autolock l(mLock);
1112    if (mAudioOutput != 0) return mAudioOutput->attachAuxEffect(effectId);
1113    return NO_ERROR;
1114}
1115
1116void MediaPlayerService::Client::notify(void* cookie, int msg, int ext1, int ext2)
1117{
1118    Client* client = static_cast<Client*>(cookie);
1119
1120    if (MEDIA_INFO == msg &&
1121        MEDIA_INFO_METADATA_UPDATE == ext1) {
1122        const media::Metadata::Type metadata_type = ext2;
1123
1124        if(client->shouldDropMetadata(metadata_type)) {
1125            return;
1126        }
1127
1128        // Update the list of metadata that have changed. getMetadata
1129        // also access mMetadataUpdated and clears it.
1130        client->addNewMetadataUpdate(metadata_type);
1131    }
1132    LOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2);
1133    client->mClient->notify(msg, ext1, ext2);
1134}
1135
1136
1137bool MediaPlayerService::Client::shouldDropMetadata(media::Metadata::Type code) const
1138{
1139    Mutex::Autolock lock(mLock);
1140
1141    if (findMetadata(mMetadataDrop, code)) {
1142        return true;
1143    }
1144
1145    if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) {
1146        return false;
1147    } else {
1148        return true;
1149    }
1150}
1151
1152
1153void MediaPlayerService::Client::addNewMetadataUpdate(media::Metadata::Type metadata_type) {
1154    Mutex::Autolock lock(mLock);
1155    if (mMetadataUpdated.indexOf(metadata_type) < 0) {
1156        mMetadataUpdated.add(metadata_type);
1157    }
1158}
1159
1160#if CALLBACK_ANTAGONIZER
1161const int Antagonizer::interval = 10000; // 10 msecs
1162
1163Antagonizer::Antagonizer(notify_callback_f cb, void* client) :
1164    mExit(false), mActive(false), mClient(client), mCb(cb)
1165{
1166    createThread(callbackThread, this);
1167}
1168
1169void Antagonizer::kill()
1170{
1171    Mutex::Autolock _l(mLock);
1172    mActive = false;
1173    mExit = true;
1174    mCondition.wait(mLock);
1175}
1176
1177int Antagonizer::callbackThread(void* user)
1178{
1179    LOGD("Antagonizer started");
1180    Antagonizer* p = reinterpret_cast<Antagonizer*>(user);
1181    while (!p->mExit) {
1182        if (p->mActive) {
1183            LOGV("send event");
1184            p->mCb(p->mClient, 0, 0, 0);
1185        }
1186        usleep(interval);
1187    }
1188    Mutex::Autolock _l(p->mLock);
1189    p->mCondition.signal();
1190    LOGD("Antagonizer stopped");
1191    return 0;
1192}
1193#endif
1194
1195static size_t kDefaultHeapSize = 1024 * 1024; // 1MB
1196
1197sp<IMemory> MediaPlayerService::decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, int* pFormat)
1198{
1199    LOGV("decode(%s)", url);
1200    sp<MemoryBase> mem;
1201    sp<MediaPlayerBase> player;
1202
1203    // Protect our precious, precious DRMd ringtones by only allowing
1204    // decoding of http, but not filesystem paths or content Uris.
1205    // If the application wants to decode those, it should open a
1206    // filedescriptor for them and use that.
1207    if (url != NULL && strncmp(url, "http://", 7) != 0) {
1208        LOGD("Can't decode %s by path, use filedescriptor instead", url);
1209        return mem;
1210    }
1211
1212    player_type playerType = getPlayerType(url);
1213    LOGV("player type = %d", playerType);
1214
1215    // create the right type of player
1216    sp<AudioCache> cache = new AudioCache(url);
1217    player = android::createPlayer(playerType, cache.get(), cache->notify);
1218    if (player == NULL) goto Exit;
1219    if (player->hardwareOutput()) goto Exit;
1220
1221    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1222
1223    // set data source
1224    if (player->setDataSource(url) != NO_ERROR) goto Exit;
1225
1226    LOGV("prepare");
1227    player->prepareAsync();
1228
1229    LOGV("wait for prepare");
1230    if (cache->wait() != NO_ERROR) goto Exit;
1231
1232    LOGV("start");
1233    player->start();
1234
1235    LOGV("wait for playback complete");
1236    if (cache->wait() != NO_ERROR) goto Exit;
1237
1238    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
1239    *pSampleRate = cache->sampleRate();
1240    *pNumChannels = cache->channelCount();
1241    *pFormat = cache->format();
1242    LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
1243
1244Exit:
1245    if (player != 0) player->reset();
1246    return mem;
1247}
1248
1249sp<IMemory> MediaPlayerService::decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, int* pFormat)
1250{
1251    LOGV("decode(%d, %lld, %lld)", fd, offset, length);
1252    sp<MemoryBase> mem;
1253    sp<MediaPlayerBase> player;
1254
1255    player_type playerType = getPlayerType(fd, offset, length);
1256    LOGV("player type = %d", playerType);
1257
1258    // create the right type of player
1259    sp<AudioCache> cache = new AudioCache("decode_fd");
1260    player = android::createPlayer(playerType, cache.get(), cache->notify);
1261    if (player == NULL) goto Exit;
1262    if (player->hardwareOutput()) goto Exit;
1263
1264    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1265
1266    // set data source
1267    if (player->setDataSource(fd, offset, length) != NO_ERROR) goto Exit;
1268
1269    LOGV("prepare");
1270    player->prepareAsync();
1271
1272    LOGV("wait for prepare");
1273    if (cache->wait() != NO_ERROR) goto Exit;
1274
1275    LOGV("start");
1276    player->start();
1277
1278    LOGV("wait for playback complete");
1279    if (cache->wait() != NO_ERROR) goto Exit;
1280
1281    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
1282    *pSampleRate = cache->sampleRate();
1283    *pNumChannels = cache->channelCount();
1284    *pFormat = cache->format();
1285    LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
1286
1287Exit:
1288    if (player != 0) player->reset();
1289    ::close(fd);
1290    return mem;
1291}
1292
1293
1294#undef LOG_TAG
1295#define LOG_TAG "AudioSink"
1296MediaPlayerService::AudioOutput::AudioOutput(int sessionId)
1297    : mCallback(NULL),
1298      mCallbackCookie(NULL),
1299      mSessionId(sessionId) {
1300    LOGV("AudioOutput(%d)", sessionId);
1301    mTrack = 0;
1302    mStreamType = AudioSystem::MUSIC;
1303    mLeftVolume = 1.0;
1304    mRightVolume = 1.0;
1305    mLatency = 0;
1306    mMsecsPerFrame = 0;
1307    mAuxEffectId = 0;
1308    mSendLevel = 0.0;
1309    setMinBufferCount();
1310}
1311
1312MediaPlayerService::AudioOutput::~AudioOutput()
1313{
1314    close();
1315}
1316
1317void MediaPlayerService::AudioOutput::setMinBufferCount()
1318{
1319    char value[PROPERTY_VALUE_MAX];
1320    if (property_get("ro.kernel.qemu", value, 0)) {
1321        mIsOnEmulator = true;
1322        mMinBufferCount = 12;  // to prevent systematic buffer underrun for emulator
1323    }
1324}
1325
1326bool MediaPlayerService::AudioOutput::isOnEmulator()
1327{
1328    setMinBufferCount();
1329    return mIsOnEmulator;
1330}
1331
1332int MediaPlayerService::AudioOutput::getMinBufferCount()
1333{
1334    setMinBufferCount();
1335    return mMinBufferCount;
1336}
1337
1338ssize_t MediaPlayerService::AudioOutput::bufferSize() const
1339{
1340    if (mTrack == 0) return NO_INIT;
1341    return mTrack->frameCount() * frameSize();
1342}
1343
1344ssize_t MediaPlayerService::AudioOutput::frameCount() const
1345{
1346    if (mTrack == 0) return NO_INIT;
1347    return mTrack->frameCount();
1348}
1349
1350ssize_t MediaPlayerService::AudioOutput::channelCount() const
1351{
1352    if (mTrack == 0) return NO_INIT;
1353    return mTrack->channelCount();
1354}
1355
1356ssize_t MediaPlayerService::AudioOutput::frameSize() const
1357{
1358    if (mTrack == 0) return NO_INIT;
1359    return mTrack->frameSize();
1360}
1361
1362uint32_t MediaPlayerService::AudioOutput::latency () const
1363{
1364    return mLatency;
1365}
1366
1367float MediaPlayerService::AudioOutput::msecsPerFrame() const
1368{
1369    return mMsecsPerFrame;
1370}
1371
1372status_t MediaPlayerService::AudioOutput::getPosition(uint32_t *position)
1373{
1374    if (mTrack == 0) return NO_INIT;
1375    return mTrack->getPosition(position);
1376}
1377
1378status_t MediaPlayerService::AudioOutput::open(
1379        uint32_t sampleRate, int channelCount, int format, int bufferCount,
1380        AudioCallback cb, void *cookie)
1381{
1382    mCallback = cb;
1383    mCallbackCookie = cookie;
1384
1385    // Check argument "bufferCount" against the mininum buffer count
1386    if (bufferCount < mMinBufferCount) {
1387        LOGD("bufferCount (%d) is too small and increased to %d", bufferCount, mMinBufferCount);
1388        bufferCount = mMinBufferCount;
1389
1390    }
1391    LOGV("open(%u, %d, %d, %d, %d)", sampleRate, channelCount, format, bufferCount,mSessionId);
1392    if (mTrack) close();
1393    int afSampleRate;
1394    int afFrameCount;
1395    int frameCount;
1396
1397    if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) {
1398        return NO_INIT;
1399    }
1400    if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) {
1401        return NO_INIT;
1402    }
1403
1404    frameCount = (sampleRate*afFrameCount*bufferCount)/afSampleRate;
1405
1406    AudioTrack *t;
1407    if (mCallback != NULL) {
1408        t = new AudioTrack(
1409                mStreamType,
1410                sampleRate,
1411                format,
1412                (channelCount == 2) ? AudioSystem::CHANNEL_OUT_STEREO : AudioSystem::CHANNEL_OUT_MONO,
1413                frameCount,
1414                0 /* flags */,
1415                CallbackWrapper,
1416                this,
1417                0,
1418                mSessionId);
1419    } else {
1420        t = new AudioTrack(
1421                mStreamType,
1422                sampleRate,
1423                format,
1424                (channelCount == 2) ? AudioSystem::CHANNEL_OUT_STEREO : AudioSystem::CHANNEL_OUT_MONO,
1425                frameCount,
1426                0,
1427                NULL,
1428                NULL,
1429                0,
1430                mSessionId);
1431    }
1432
1433    if ((t == 0) || (t->initCheck() != NO_ERROR)) {
1434        LOGE("Unable to create audio track");
1435        delete t;
1436        return NO_INIT;
1437    }
1438
1439    LOGV("setVolume");
1440    t->setVolume(mLeftVolume, mRightVolume);
1441
1442    mMsecsPerFrame = 1.e3 / (float) sampleRate;
1443    mLatency = t->latency();
1444    mTrack = t;
1445
1446    t->setAuxEffectSendLevel(mSendLevel);
1447    return t->attachAuxEffect(mAuxEffectId);;
1448}
1449
1450void MediaPlayerService::AudioOutput::start()
1451{
1452    LOGV("start");
1453    if (mTrack) {
1454        mTrack->setVolume(mLeftVolume, mRightVolume);
1455        mTrack->setAuxEffectSendLevel(mSendLevel);
1456        mTrack->start();
1457    }
1458}
1459
1460
1461
1462ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size)
1463{
1464    LOG_FATAL_IF(mCallback != NULL, "Don't call write if supplying a callback.");
1465
1466    //LOGV("write(%p, %u)", buffer, size);
1467    if (mTrack) {
1468        ssize_t ret = mTrack->write(buffer, size);
1469        return ret;
1470    }
1471    return NO_INIT;
1472}
1473
1474void MediaPlayerService::AudioOutput::stop()
1475{
1476    LOGV("stop");
1477    if (mTrack) mTrack->stop();
1478}
1479
1480void MediaPlayerService::AudioOutput::flush()
1481{
1482    LOGV("flush");
1483    if (mTrack) mTrack->flush();
1484}
1485
1486void MediaPlayerService::AudioOutput::pause()
1487{
1488    LOGV("pause");
1489    if (mTrack) mTrack->pause();
1490}
1491
1492void MediaPlayerService::AudioOutput::close()
1493{
1494    LOGV("close");
1495    delete mTrack;
1496    mTrack = 0;
1497}
1498
1499void MediaPlayerService::AudioOutput::setVolume(float left, float right)
1500{
1501    LOGV("setVolume(%f, %f)", left, right);
1502    mLeftVolume = left;
1503    mRightVolume = right;
1504    if (mTrack) {
1505        mTrack->setVolume(left, right);
1506    }
1507}
1508
1509status_t MediaPlayerService::AudioOutput::setAuxEffectSendLevel(float level)
1510{
1511    LOGV("setAuxEffectSendLevel(%f)", level);
1512    mSendLevel = level;
1513    if (mTrack) {
1514        return mTrack->setAuxEffectSendLevel(level);
1515    }
1516    return NO_ERROR;
1517}
1518
1519status_t MediaPlayerService::AudioOutput::attachAuxEffect(int effectId)
1520{
1521    LOGV("attachAuxEffect(%d)", effectId);
1522    mAuxEffectId = effectId;
1523    if (mTrack) {
1524        return mTrack->attachAuxEffect(effectId);
1525    }
1526    return NO_ERROR;
1527}
1528
1529// static
1530void MediaPlayerService::AudioOutput::CallbackWrapper(
1531        int event, void *cookie, void *info) {
1532    //LOGV("callbackwrapper");
1533    if (event != AudioTrack::EVENT_MORE_DATA) {
1534        return;
1535    }
1536
1537    AudioOutput *me = (AudioOutput *)cookie;
1538    AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info;
1539
1540    size_t actualSize = (*me->mCallback)(
1541            me, buffer->raw, buffer->size, me->mCallbackCookie);
1542
1543    buffer->size = actualSize;
1544
1545}
1546
1547#undef LOG_TAG
1548#define LOG_TAG "AudioCache"
1549MediaPlayerService::AudioCache::AudioCache(const char* name) :
1550    mChannelCount(0), mFrameCount(1024), mSampleRate(0), mSize(0),
1551    mError(NO_ERROR), mCommandComplete(false)
1552{
1553    // create ashmem heap
1554    mHeap = new MemoryHeapBase(kDefaultHeapSize, 0, name);
1555}
1556
1557uint32_t MediaPlayerService::AudioCache::latency () const
1558{
1559    return 0;
1560}
1561
1562float MediaPlayerService::AudioCache::msecsPerFrame() const
1563{
1564    return mMsecsPerFrame;
1565}
1566
1567status_t MediaPlayerService::AudioCache::getPosition(uint32_t *position)
1568{
1569    if (position == 0) return BAD_VALUE;
1570    *position = mSize;
1571    return NO_ERROR;
1572}
1573
1574////////////////////////////////////////////////////////////////////////////////
1575
1576struct CallbackThread : public Thread {
1577    CallbackThread(const wp<MediaPlayerBase::AudioSink> &sink,
1578                   MediaPlayerBase::AudioSink::AudioCallback cb,
1579                   void *cookie);
1580
1581protected:
1582    virtual ~CallbackThread();
1583
1584    virtual bool threadLoop();
1585
1586private:
1587    wp<MediaPlayerBase::AudioSink> mSink;
1588    MediaPlayerBase::AudioSink::AudioCallback mCallback;
1589    void *mCookie;
1590    void *mBuffer;
1591    size_t mBufferSize;
1592
1593    CallbackThread(const CallbackThread &);
1594    CallbackThread &operator=(const CallbackThread &);
1595};
1596
1597CallbackThread::CallbackThread(
1598        const wp<MediaPlayerBase::AudioSink> &sink,
1599        MediaPlayerBase::AudioSink::AudioCallback cb,
1600        void *cookie)
1601    : mSink(sink),
1602      mCallback(cb),
1603      mCookie(cookie),
1604      mBuffer(NULL),
1605      mBufferSize(0) {
1606}
1607
1608CallbackThread::~CallbackThread() {
1609    if (mBuffer) {
1610        free(mBuffer);
1611        mBuffer = NULL;
1612    }
1613}
1614
1615bool CallbackThread::threadLoop() {
1616    sp<MediaPlayerBase::AudioSink> sink = mSink.promote();
1617    if (sink == NULL) {
1618        return false;
1619    }
1620
1621    if (mBuffer == NULL) {
1622        mBufferSize = sink->bufferSize();
1623        mBuffer = malloc(mBufferSize);
1624    }
1625
1626    size_t actualSize =
1627        (*mCallback)(sink.get(), mBuffer, mBufferSize, mCookie);
1628
1629    if (actualSize > 0) {
1630        sink->write(mBuffer, actualSize);
1631    }
1632
1633    return true;
1634}
1635
1636////////////////////////////////////////////////////////////////////////////////
1637
1638status_t MediaPlayerService::AudioCache::open(
1639        uint32_t sampleRate, int channelCount, int format, int bufferCount,
1640        AudioCallback cb, void *cookie)
1641{
1642    LOGV("open(%u, %d, %d, %d)", sampleRate, channelCount, format, bufferCount);
1643    if (mHeap->getHeapID() < 0) {
1644        return NO_INIT;
1645    }
1646
1647    mSampleRate = sampleRate;
1648    mChannelCount = (uint16_t)channelCount;
1649    mFormat = (uint16_t)format;
1650    mMsecsPerFrame = 1.e3 / (float) sampleRate;
1651
1652    if (cb != NULL) {
1653        mCallbackThread = new CallbackThread(this, cb, cookie);
1654    }
1655    return NO_ERROR;
1656}
1657
1658void MediaPlayerService::AudioCache::start() {
1659    if (mCallbackThread != NULL) {
1660        mCallbackThread->run("AudioCache callback");
1661    }
1662}
1663
1664void MediaPlayerService::AudioCache::stop() {
1665    if (mCallbackThread != NULL) {
1666        mCallbackThread->requestExitAndWait();
1667    }
1668}
1669
1670ssize_t MediaPlayerService::AudioCache::write(const void* buffer, size_t size)
1671{
1672    LOGV("write(%p, %u)", buffer, size);
1673    if ((buffer == 0) || (size == 0)) return size;
1674
1675    uint8_t* p = static_cast<uint8_t*>(mHeap->getBase());
1676    if (p == NULL) return NO_INIT;
1677    p += mSize;
1678    LOGV("memcpy(%p, %p, %u)", p, buffer, size);
1679    if (mSize + size > mHeap->getSize()) {
1680        LOGE("Heap size overflow! req size: %d, max size: %d", (mSize + size), mHeap->getSize());
1681        size = mHeap->getSize() - mSize;
1682    }
1683    memcpy(p, buffer, size);
1684    mSize += size;
1685    return size;
1686}
1687
1688// call with lock held
1689status_t MediaPlayerService::AudioCache::wait()
1690{
1691    Mutex::Autolock lock(mLock);
1692    while (!mCommandComplete) {
1693        mSignal.wait(mLock);
1694    }
1695    mCommandComplete = false;
1696
1697    if (mError == NO_ERROR) {
1698        LOGV("wait - success");
1699    } else {
1700        LOGV("wait - error");
1701    }
1702    return mError;
1703}
1704
1705void MediaPlayerService::AudioCache::notify(void* cookie, int msg, int ext1, int ext2)
1706{
1707    LOGV("notify(%p, %d, %d, %d)", cookie, msg, ext1, ext2);
1708    AudioCache* p = static_cast<AudioCache*>(cookie);
1709
1710    // ignore buffering messages
1711    switch (msg)
1712    {
1713    case MEDIA_ERROR:
1714        LOGE("Error %d, %d occurred", ext1, ext2);
1715        p->mError = ext1;
1716        break;
1717    case MEDIA_PREPARED:
1718        LOGV("prepared");
1719        break;
1720    case MEDIA_PLAYBACK_COMPLETE:
1721        LOGV("playback complete");
1722        break;
1723    default:
1724        LOGV("ignored");
1725        return;
1726    }
1727
1728    // wake up thread
1729    Mutex::Autolock lock(p->mLock);
1730    p->mCommandComplete = true;
1731    p->mSignal.signal();
1732}
1733
1734} // namespace android
1735